By Chief Meteorologist JD Rudd Wisconsin PUBLISHED 2:30 PM ET Mar. 12, 2021 PUBLISHED 2:30 PM EST Mar. 12, 2021 SHARE March is usually when the tug-of-war between seasons begins in our state, leaving us caught in the middle. What You Need To Know The earliest known tornado happened on March 6 The strongest ever was an F-2 in multiple years March tornadoes are rare, but they can certainly happen Typically in March we’re still grumbling about snow and counting down the days for real spring to finally show up. However, there have been some years where we got a little more than we bargained for: tornadic thunderstorms.